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Search: Posts Made By: Duragrouch
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
05-17-24, 04:44 AM
Replies: 21
Views: 376
Posted By Duragrouch

A lot of engines these days come with a magnetic...

A lot of engines these days come with a magnetic drain plug, and that can help a ton, as all the cylinder and ring metal is magnetic, at least for an iron or iron-sleeved enginer. Also, oil filters...
Forum: Bicycle Mechanics
05-17-24, 04:14 AM
Replies: 27
Views: 313
Posted By Duragrouch

Disclaimer: Mine is a narrow segment of the...

Disclaimer: Mine is a narrow segment of the biking population, I think.

Good wheels are not cheap. Thus, I like them to be durable. This would be different if I were running race weight, but over...
Forum: Bicycle Mechanics
05-17-24, 03:52 AM
Replies: 7
Views: 186
Posted By Duragrouch

As I suspected the moment you said Seattle,...

As I suspected the moment you said Seattle, that's Aaron's Bike Repair/Rat City Bikes, they specialize in repair of internal gear hubs of all kinds. I would have been shocked if there were *two*...
Forum: Folding Bikes
05-17-24, 03:21 AM
Replies: 16
Views: 418
Posted By Duragrouch

I was going to suggest perusing craigslist for a...

I was going to suggest perusing craigslist for a used Bike Friday tandem, BFs can be a really good deal that way, if checked out properly, sounds like you are looking at used. Main thing I would stay...
Forum: Bicycle Mechanics
05-17-24, 02:50 AM
Replies: 21
Views: 376
Posted By Duragrouch

I could easily see assembly of cleaner...

I could easily see assembly of cleaner components, post machining. But, for engines at least, it's not a matter of the cylinder bores being smoother or cleaner; They can't be super smooth and have...
Forum: Bicycle Mechanics
05-17-24, 02:34 AM
Replies: 21
Views: 376
Posted By Duragrouch

Like many well engineered things, Rohloff is...

Like many well engineered things, Rohloff is designed and made by gray-haired folks in da olde country. Or at least that's how I imagine it. So is the 3x3 Nine hub, new on the scene and I'm hoping is...
Forum: Bicycle Mechanics
05-16-24, 11:38 PM
Replies: 46
Views: 1,061
Posted By Duragrouch

I used to have one of those oilers with thin oil,...

I used to have one of those oilers with thin oil, I think I got cheap from Nashbar, plastic finally cracked. For same function now, I keep a hypodermic syringe filled with... ATF!

I think back in...
Forum: Touring
05-16-24, 11:32 PM
Replies: 52
Views: 1,248
Posted By Duragrouch

A good idea. Last I looked perhaps two years ago,...

A good idea. Last I looked perhaps two years ago, refillable small propane bottles cost a bunch. I actually have an adaptor to refill regular ones from a large cylinder, but with caution and a scale...
Forum: Bicycle Mechanics
05-16-24, 11:15 PM
Replies: 43
Views: 660
Posted By Duragrouch

A agree with all above. Perhaps galling was...

A agree with all above.

Perhaps galling was the wrong term for what I saw at pedals spindles when I frequently traveled with a bike, as those are two very different hardness materials. But pulling...
Forum: General Cycling Discussion
05-16-24, 10:31 PM
Replies: 36
Views: 1,103
Posted By Duragrouch

I've never seen that. Thought-provoking; His seat...

I've never seen that. Thought-provoking; His seat is too low, based on very bent leg on low pedal, but if seat goes up, steering needs to as well. With significant braking on front wheel, I think...
Forum: Bicycle Mechanics
05-16-24, 09:58 PM
Replies: 43
Views: 660
Posted By Duragrouch

Only twice; 1) A crank bolt on a tapered BB...

Only twice; 1) A crank bolt on a tapered BB spindle, and the previous bolt and cartridge threads were galling dry. With grease, it was coming loose all the time, I had to check it before every ride....
Forum: Touring
05-16-24, 09:36 PM
Replies: 52
Views: 1,248
Posted By Duragrouch

I'm a liquid multifuel stove enthusiast from way...

I'm a liquid multifuel stove enthusiast from way back, although white gas has tripled in cost in the past 10 years to $15 a gallon, even more in smaller quantities, and I hate burning gasoline or...
Forum: Touring
05-16-24, 09:22 PM
Replies: 52
Views: 1,248
Posted By Duragrouch

I had to look up CSS, never heard of it. Looks...

I had to look up CSS, never heard of it. Looks interesting, but they don't mention the material except to say a "long chain polymer". My guess would be UHMWPE, given it's now ubiquitous use in...
Forum: Bicycle Mechanics
05-16-24, 08:31 PM
Replies: 43
Views: 660
Posted By Duragrouch

I agree with you on this. I prefer anti-seize for...

I agree with you on this. I prefer anti-seize for threads (over grease or oil) because a) it guards against galling better, especially stainless steel bolts, and b) the very fine metal particles in...
Forum: Bicycle Mechanics
05-16-24, 08:15 PM
Replies: 43
Views: 660
Posted By Duragrouch

Sincere thank you, I missed that.

Sincere thank you, I missed that.
Forum: Classic & Vintage
05-16-24, 07:57 PM
Replies: 289
Views: 76,388
Posted By Duragrouch

Seattle seattle seattle

SEATTLE SEATTLE SEATTLE

I just saw a screaming deal on a very similar Cannondale 2.8 crit, same style with cantilevered rear dropouts, and the bonus of the replaceable derailleur hanger....
Forum: Classic & Vintage
05-16-24, 07:45 PM
Replies: 13
Views: 680
Posted By Duragrouch

At goodwill today; Same stuff, different brand,...

At goodwill today; Same stuff, different brand, this is the second-most common style of these bottles I find (EDIT: Oh, this one is different from ones in past which were French wording, this is same...
Forum: Bicycle Mechanics
05-16-24, 07:38 PM
Replies: 37
Views: 820
Posted By Duragrouch

All good info! I wondered about the red part on...

All good info! I wondered about the red part on those patches (which I haven't seen in 20 years).

I recall from the late 60s or early 70s, a goodyear tire shop I would pass had as part of their...
Forum: Bicycle Mechanics
05-16-24, 04:07 AM
Replies: 43
Views: 660
Posted By Duragrouch

My guess, and only a guess, is pedal bearing(s)....

My guess, and only a guess, is pedal bearing(s). Assuming not cartridge bearings and conventional cup and cone bearings: Given the tiny balls and small race and spindle, they are particularly...
Forum: Folding Bikes
05-16-24, 01:11 AM
Replies: 12
Views: 338
Posted By Duragrouch

Sorry but this thread title is reminding me of a...

Sorry but this thread title is reminding me of a tuba joke.

What's the range of a tuba?
Twenty yards if you've got a good arm!
Forum: Bicycle Mechanics
05-16-24, 01:07 AM
Replies: 46
Views: 1,061
Posted By Duragrouch

Back in the day, dad said, "Son, there is sliding...

Back in the day, dad said, "Son, there is sliding contact grease, and rolling contact grease." The former for things like the zerk fittings on the car steering linkage (sliding bushings), the latter...
Forum: Folding Bikes
05-16-24, 12:38 AM
Replies: 12
Views: 338
Posted By Duragrouch

Always smart to look at things on paper before...

Always smart to look at things on paper before buying, that is the essence of engineering, predicting results before you buy or build. Online gear calculators have made this a lot easier for the...
Forum: Folding Bikes
05-16-24, 12:28 AM
Replies: 12
Views: 338
Posted By Duragrouch

I typically use Sheldon Brown Gear Calc, just...

I typically use Sheldon Brown Gear Calc, just search for that. The pulldown menu options are not too difficult, I use results in gear-inches but you can also select meters development and also speed...
Forum: Commuting
05-16-24, 12:23 AM
Replies: 22
Views: 896
Posted By Duragrouch

I was looking forward to riding back in the...

I was looking forward to riding back in the taller observation cars. Ended up preferring the lower cars. The sky-facing windows were not an advantage on that route, not going through mountains, but I...
Forum: Electric Bikes
05-16-24, 12:14 AM
Replies: 25
Views: 1,112
Posted By Duragrouch

It appears to be a fantastic deal. But if it...

It appears to be a fantastic deal. But if it doesn't have a low enough gear for me to make it up a long hill when the battery is dead, that's what's known as a "showstopper" problem to me, no matter...
Forum: Folding Bikes
05-15-24, 05:42 AM
Replies: 8
Views: 278
Posted By Duragrouch

That's what I'm saying. I'm not a flag-waver for...

That's what I'm saying. I'm not a flag-waver for the big brands, but diverging seatpost and handlepost, for a bike that adjusts to a wide height range, was pretty smart. Wish I'd've thought of it.
...
Forum: Folding Bikes
05-15-24, 01:46 AM
Replies: 7
Views: 340
Posted By Duragrouch

Aluminum can be a great frame material. I have a...

Aluminum can be a great frame material. I have a late 1980s Cannondale from 6061-T6. Newer aluminum bikes use 7005 aluminum as it does not require post-weld heat-treating like 6061-T6.

In general,...
Forum: Folding Bikes
05-15-24, 01:18 AM
Replies: 12
Views: 338
Posted By Duragrouch

First, do you mean a Dahon Curve, or Dahon Curl?...

First, do you mean a Dahon Curve, or Dahon Curl? They use much different frames, but similar size wheels. The Curl folds very similar to a Brompton, with a swinging rear triangle and front frame...
Forum: Folding Bikes
05-15-24, 12:42 AM
Replies: 8
Views: 278
Posted By Duragrouch

Uh... the OP was asking opinions on the Mezzo...

Uh... the OP was asking opinions on the Mezzo *before buying*. One would think they want to hear all, good and bad. Otherwise they wouldn't ask.

If you think my observations about the design are...
Forum: Classic & Vintage
05-15-24, 12:35 AM
Replies: 13
Views: 680
Posted By Duragrouch

"Burn on, big river, burn on Burn on, big...

"Burn on, big river, burn on
Burn on, big river, burn on
Now the Lord can make you tumble
And the Lord can make you turn
And the Lord can make you overflow
But the Lord can't make you burn"

-...
Forum: Bicycle Mechanics
05-15-24, 12:30 AM
Replies: 37
Views: 820
Posted By Duragrouch

I just don't have any rubber patch kits. I still...

I just don't have any rubber patch kits. I still have the boxes, holds presta-schrader adaptor (I haven't needed in a couple decades but I help others who do) plus a ball-needle inflator. I'll look...
Forum: Bicycle Mechanics
05-15-24, 12:24 AM
Replies: 46
Views: 1,552
Posted By Duragrouch

After cleaning my chain with an on-bike cleaner...

After cleaning my chain with an on-bike cleaner and then wiping dry, I apply chain lube (75W-90 gear oil) via a covid-test dropper bottle, one drop at each roller. That doesn't leave much excess...
Forum: Bicycle Mechanics
05-15-24, 12:20 AM
Replies: 46
Views: 1,061
Posted By Duragrouch

I stopped using Tri-Flow "with PTFE" after...

I stopped using Tri-Flow "with PTFE" after working in engineering. I know what PTFE looks like, and there doesn't seem to be any, or at least much, in the Tri-Flow clear carrier oil that then...
Forum: Bicycle Mechanics
05-15-24, 12:12 AM
Replies: 46
Views: 1,061
Posted By Duragrouch

I don't know about canola oil, but I lubed hair...

I don't know about canola oil, but I lubed hair clippers in a pinch with olive oil, big mistake, after a while it dried to a gum and locked up the clippers. Take apart the two blades and clean, a few...
Forum: General Cycling Discussion
05-15-24, 12:05 AM
Replies: 36
Views: 1,103
Posted By Duragrouch

I have a LWB USS 'bent (Long Wheelbase, Under...

I have a LWB USS 'bent (Long Wheelbase, Under Seat Steering, recumbent), which is close.

Oh, and it also has rear high monostays, so doesn't need an outboard cog, it could mount a belt drive with...
Forum: General Cycling Discussion
05-14-24, 11:58 PM
Replies: 36
Views: 1,103
Posted By Duragrouch

You just described a Rokon 2WD motorcycle.

You just described a Rokon 2WD motorcycle.
Forum: Bicycle Mechanics
05-14-24, 03:43 AM
Replies: 14
Views: 386
Posted By Duragrouch

Something getting shorter... something getting...

Something getting shorter... something getting longer... something getting unclipped...

Not having a clue how that hub is constructed, I'm gonna take a first stab at it and say that the (pic) left...
Forum: Bicycle Mechanics
05-14-24, 03:38 AM
Replies: 46
Views: 1,061
Posted By Duragrouch

(above) Road biking only, environmental dust...

(above) Road biking only, environmental dust contamination of oils has never been the issue; It gets pasty after a month of long daily rides, due to fine chain metal powder forming a colloid...
Forum: Classic & Vintage
05-14-24, 03:11 AM
Replies: 23
Views: 667
Posted By Duragrouch

I don't know Colnagos. Is the frame construction...

I don't know Colnagos. Is the frame construction typical of Colnago? Did they weld frames and are those welds typical of Colnago, or were Colnagos all lugged and brazed frames? Do the rear dropouts...
Forum: Folding Bikes
05-14-24, 02:55 AM
Replies: 8
Views: 278
Posted By Duragrouch

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg6.ibsrv.net/gimg/bikeforums.net-vbulletin/1355x1053/mezzo_d9_folding_bike_as_good_as_posible_739582475_6e32e9aaa737f5497a858e22c4ef763196d7930a.jpg

Just me, but I think the handlepost...
Forum: Classic & Vintage
05-14-24, 02:19 AM
Replies: 13
Views: 680
Posted By Duragrouch

The swingtop bottle shown ("GEYER FRERES 1895")...

The swingtop bottle shown ("GEYER FRERES 1895") from Alsace I think, is not antique, but probably current production; Cap is plastic, there's probably a rectangular "scoop" in the side near the...
Forum: General Cycling Discussion
05-14-24, 02:10 AM
Replies: 36
Views: 1,103
Posted By Duragrouch

Because then, instead of the hub rotating around...

Because then, instead of the hub rotating around a fixed axle, the axle has to rotate, which makes for a trickier dropout to support a bearing for that, which describes a typical "semi-floating" car...
Forum: Bicycle Mechanics
05-14-24, 01:57 AM
Replies: 46
Views: 1,061
Posted By Duragrouch

Not that I'm endorsing ATF as bike lube, but it's...

Not that I'm endorsing ATF as bike lube, but it's both hydraulic fluid and lube. I had a GM car with a manual transmission and it used Dexron ATF as lube, possibly for line standardization, as...
Forum: Bicycle Mechanics
05-14-24, 01:36 AM
Replies: 14
Views: 386
Posted By Duragrouch

At midpoint there appears to be a dog-clutch,...

At midpoint there appears to be a dog-clutch, thin metal cylindrical part with axial tabs, that appears to perhaps be missing a section between tabs. Hard to see with all the grease.

Just to the...
Forum: Bicycle Mechanics
05-14-24, 01:02 AM
Replies: 34
Views: 1,085
Posted By Duragrouch

You are correct to anticipate needing lower...

You are correct to anticipate needing lower gearing. For long spins, not super steep, race bike and not loaded tourer, I think you would be able to do it with around 20 gear-inch low. Let's see how...
Forum: Touring
05-13-24, 11:21 PM
Replies: 44
Views: 1,590
Posted By Duragrouch

(above) It was intended as a mild joke, only...

(above) It was intended as a mild joke, only because you said "huge variation", yes there is. No malice intended. Sincerest apologies.

I like your posts. High value.
Forum: Bicycle Mechanics
05-13-24, 10:51 PM
Replies: 29
Views: 807
Posted By Duragrouch

I don't doubt any of the above, like I said, I'm...

I don't doubt any of the above, like I said, I'm not a pro. Bike fit I'm surprised, that I think it would be included with any bike purchase (and for correct frame sizing of bike to be purchased),...
Forum: Bicycle Mechanics
05-13-24, 10:16 PM
Replies: 115
Views: 20,257
Posted By Duragrouch

All of the above matches what I saw on ZFC, the...

All of the above matches what I saw on ZFC, the thinner, higher speed chains last longer. Counterintuitive (and I think may be counter to old advice on Sheldon Brown), until the reasons are known. I...
Forum: Bicycle Mechanics
05-13-24, 10:10 PM
Replies: 21
Views: 376
Posted By Duragrouch

I agree that initial wear-in on anything...

I agree that initial wear-in on anything mechanical, IGH, transmission, engine, etc, produces the most metal particles, warranting an earlier lube change. But a magnetic drain plug really helps in...
Forum: Bicycle Mechanics
05-13-24, 09:38 PM
Replies: 37
Views: 820
Posted By Duragrouch

"Doctor, heal thy self." I've said in the past of...

"Doctor, heal thy self." I've said in the past of my liking the Park sticky patches, good luck with them, others have said they are more temporary patches. Went to ride today, not quite flat but...
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